Implement localization on xblocks-core, xblocks-extra

Summary

Define and document the translation architecture for consolidated XBlock repositories:

• xblocks-contrib
• xblocks-extra

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Relevant References

• openedx-translations:
  https://github.com/openedx/openedx-translations/tree/main/translations

• openedx-atlas (CLI to pull translations):
  https://github.com/openedx/openedx-atlas

  Glob pattern support docs:
  https://github.com/openedx/openedx-atlas/blob/1eb61a69e8a0f9c0911fc5d334066d3a06b3d425/docs/decisions/0001-support-glob-pattern.rst#L70

• Archived PR:
  https://github.com/openedx/openedx-translations/pull/70340

• openedx-platform management command:
  https://github.com/openedx/openedx-platform/blob/master/common/djangoapps/xblock_django/management/commands/pull_xblock_translations.py

  Usage:

  • make pull_xblock_translations (run inside lms-shell)
  • python manage.py lms pull_xblock_translations --filter=ar,fr_CA

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Proposed Strategy

1. No shared root-level conf directory in consolidated repositories (xblocks-contrib / xblocks-extra) as per current implementation
2. Each XBlock maintains its own conf directory within its module_name
3. Each XBlock has a separate entry in openedx-translations/transifex.yml
4. Update make extract_translations in xblocks-* repos to extract translations
   • It will extract per block
5. The daily cron job in openedx-translations should: - Checkout xblocks-extra / xblocks-contrib
   • Extract translation source files for each XBlock independently
6. Ensure translation path resolution remains compatible with openedx-platform

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Path Compatibility Validation

Current lookup pattern in openedx-platform:

translations/*/{module_name}/conf/locale:{module_name}

Proposed path of xblock translations for consolidated (xblocks-*) repositories:

openedx-translations/translations/xblocks-*/MODULE_NAME/conf/locale/en/LC_MESSAGES/django.po

Example path:

openedx-translations/translations/xblocks-contrib/xblock_pdf/conf/locale/en/LC_MESSAGES/django.po

This path is compatible for openedx-platform lookup pattern.

Example of existing path of Audio xblock:

openedx-translations/translations/AudioXBlock/audio/conf/locale

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Cleanup / Migration Tasks

• Verify whether legacy translation paths are auto-removed
• If not, remove obsolete translation directories explicitly
• Validate full extraction + pull flow after migration

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Definition of Done

• Architecture finalized for consolidated XBlock repos
• Extraction workflow updated
• transifex.yml updated with per-XBlock entries
• Compatibility with openedx-platform verified
• Legacy paths cleaned up
• End-to-end translation flow validated
• Translation works after the deletion of older repositories translations or builtin blocks code